i-manager's Journal on Material Science (JMS)


Volume 4 Issue 2 July - September 2016

Research Paper

Role of Polymer in Enhancement of Conductivity of Proton and Lithium Conducting Polymer Gel Electrolytes

Rajiv* , Shuchi Sharma**, Naresh Dhiman***, Dinesh Pathak****
** Research Scholar, Department of Physics, Sri Sai University, Palampur, Himachal Pradesh, India.
*** Assistant Professor, Department of Physics, Sri Sai University, Palampur, Himachal Pradesh, India.
**** Assistant Professor and HOD, Department of Physics, Sri Sai University, Palampur, Himachal Pradesh, India.
Kumar, R., Sharma, S.,Dhiman, N., and Pathak, D. (2016). Role of Polymer in Enhancement of Conductivity of Proton and Lithium Conducting Polymer Gel Electrolytes. i-manager’s Journal on Material Science, 4(2), 1-8. https://doi.org/10.26634/jms.4.2.8124

Abstract

In this paper, proton and lithium conducting polymer gel electrolytes containing ortho-nitrobenzoic acid, lithium hexafluorophosphate, diethyl carbonate, polymethylmethacrylate have been prepared and characterized by impedance spectroscopy. The ionic conductivity, pH and viscosity of the electrolytes have been studied as a function of acid/salt and polymer concentration. In both proton and lithium conducting polymer gel electrolytes, the ionic conductivity has been found to increase with an increase in acid/salt and polymer concentration. In proton conducting polymer gel electrolytes, an increase in conductivity has been explained to be due to the dissociation of undissociated acid or ion aggregates present in the electrolytes, which increases the free H+ ion concentration and this has been monitored by pH measurements. Similar results have also been observed for lithium ion conducting polymer gel electrolytes. An increase in conductivity with polymer addition has been explained by “Breathing Polymeric Chain Model”, which shows that the polymer plays an active role in enhancing the conductivity along with an increase in mechanical strength, which is advantageous for their use in various applications.

Research Paper

Study of the Effect of Deep Cryogenic Treatment on the Mechanical Properties of Hot Die Steel AISI-H13

Sanjeev Katoch* , Rakesh Sehgal**, Vishal Singh***
* Research Scholar, Centre for Material Science and Engineering, National Institute of Technology, Hamirpur, India.
** Professor, Department of Mechanical Engineering, National Institute of Technology, Hamirpur, India.
*** Associate Professor, Centre for Material Science and Engineering, National Institute of Technology, Hamirpur, India.
Katoch, S., Sehgal, R., and Singh, V. (2016). Study of the Effect of Deep Cryogenic Treatment on the Mechanical Properties of Hot Die Steel AISI-H13. i-manager’s Journal on Material Science, 4(2), 9-18. https://doi.org/10.26634/jms.4.2.8125

Abstract

In this paper, an effort has been made to investigate the influence of Deep Cryogenic Treatment (DCT) on the mechanical properties of hot die steel grade AISI H13. DCT has been performed at -154 °C for 6, 21, and 36 hours and tempered for 2 hours at 620 °C. The mechanical properties obtained after DCT and conventional vacuum heat treatment have been characterized with a distinction to comprehend the influence of cryogenic treatment vis-à-vis vacuum heat treatment and tempering on the hardness, tensile strength, % elongation, and toughness (in Charpy Vnotch Impact Test (CVN)). The results show that cryogenically treated samples viz. ATC1 (6) T have 3.1% higher hardness, 36% higher toughness (CVN) and 46% higher percentage elongation than A3T treated samples respectively, while the tensile strength varied cryogenically treated samples show the reduction in tensile strength by 12.8%, in comparison to A3T treated samples. Field emission scanning electron microscopy has been used for the study of the morphology of microstructure and fractured surfaces.

Research Paper

Thermal Conductivity of Fly Ash Cenospheres for Variable Particle Size Ranges

Craig Menezes* , Ajit P. Rathod**, Kailas L. Wasewar***
* UG Scholar, Department of Chemical Engineering, Visvesvaraya National Institute of Technology, Nagpur, India.
** Assistant Professor, Department of Chemical Engineering, Visvesvaraya National Institute of Technology, Nagpur, India.
*** Associate Professor, Department of Chemical Engineering, Visvesvaraya National Institute of Technology, Nagpur, India.
Menezes, C., Rathod, A.P., and Wasewar, K. L. (2016). Thermal Conductivity of Fly Ash Cenospheres for Variable Particle Size Ranges. i-manager’s Journal on Material Science, 4(2), 19-23. https://doi.org/10.26634/jms.4.2.8126

Abstract

Thermal conductivity of a material is a physical property of significant importance in the field of engineering. In the present study, the thermal conductivity of cenospheres have been experimentally determined for particle diameter size ranges of < 105 μm, 105 μm to 180 μm, and > 180 μm using concentric spheres method. The experimentally estimated thermal conductivity of cenosphere has been found to be in the range of 0.128 - 0.365 W/mK which is comparable with literature.

Research Paper

FTIR Analysis of Aging of Binder Modified with Chromium Waste Generated from Leather Industry

Siksha Swaroopa Kar* , Pramod Kumar Jain**, G. Sekaran***
* Scientist, Flexible Pavement Division, CSIR – Central Road Research Institute, Delhi, India.
** Ex-Chief Scientist, CSIR – Central Road Research Institute, New Delhi, India.
*** Ex-Chief Scientist, CSIR – Central Leather Research Institute, Chennai, India.
Kar, S.S., Jain, P. K., and Sekaran, G. (2016). FTIR Analysis of Aging of Binder Modified with Chromium Waste Generated from Leather Industry. i-manager’s Journal on Material Science, 4(2), 24-29. https://doi.org/10.26634/jms.4.2.8127

Abstract

Bitumen is a visco-elastic material, and primary requirement for flexible pavement construction. Elementally, bitumen is around 95% carbon and hydrogen, containing about 85% of hydrogen and 8% of carbon, and up to 5% sulfur, 1% nitrogen, 1% oxygen and 2000 ppm metals. It is composed mainly of highly condensed polycyclic aromatic hydrocarbons. Fourier Transform Infrared (FTIR) microscope is used for studying the hydrocarbon composition of bitumen. With the addition of different modifiers, the required properties of bitumen for road construction is improved. In this study, waste generated from leather industry is converted into non hazardous form which is used as a modifier to the bitumen. FTIR measurements were conducted for obtaining the microstructure distribution of neat and modified bitumen. Meanwhile, the short-term and long-term aging processes of bitumens are simulated by Rolling Thin Film Oven (RTFO) and Pressure Aging Vessel (PAV) tests. Sulfoxide and carbonyl index were calculated for the aged and neat binders and it has been observed that, the rate of oxidation is faster in neat bitumen compared to modified binder.

Review Paper

Superalloys under the Effect of Hot Corrosion and Role of HVOF Coatings - A Review

Atul Agnihotri* , Sukhminderbir Singh Kalsi**
* Research Scholar, I.K. Gujral Punjab Technical University, Jalandhar, India.
** Assistant Professor, Department of Mechanical Engineering, I.K. Gujral Punjab Technical University, Jalandhar, India.
Agnihotri, A., and Kalsi, S. S. (2016). Superalloys under the Effect of Hot Corrosion and Role of HVOF Coatings - A Review. i-manager’s Journal on Material Science, 4(2), 30-36. https://doi.org/10.26634/jms.4.2.8128

Abstract

Superalloys are generally used for structural components at high temperatures above 540 °C in corrosive environments. The rising demand for more electricity, reduced plant emissions and higher efficient power plants had forced us to use better corrosion resistance materials. Only superalloys can meet these demands since they exhibit outstanding strength and surface stability at temperatures upto 85% of their melting points. At elevated temperatures and in oxidizing atmosphere, the metals and alloys start degrading due to the induction of fused salts deposits which is also known as the hot corrosion. Hot Corrosion has become a serious problem in boilers, gas turbines, IC engines and paper and pulp industries. No alloy is found to resist hot corrosion attack indefinitely. Though superalloys have been designed for elevated temperature applications, however protective coatings are applied to enhance their life for use in corrosive environments as they are not able to meet the requirement of high temperature strength and high temperature corrosion resistance simultaneously. The aim of the present study is to discuss the hot corrosion behaviours of the coatings at higher temperature under the light of available literature.

Review Paper

Composite Materials and their Recycling

Tom Page*
*Senior Lecturer, Loughborough Design School, United Kingdom.
Page, T. (2016). Composite Materials and their Recycling. i-manager’s Journal on Material Science, 4(2), 37-51. https://doi.org/10.26634/jms.4.2.8129

Abstract

This paper presents an assessment of the growing use of Glass Fibre Reinforced Plastic and Carbon Fibre Reinforced Plastic composites in the automotive and marine industry through the decades to current use. This report investigates how legislation such as the End of Life of Vehicles (ELV) will force the automotive industry to prepare for end of life recycling and gauge their progress with the aid of reports from the Knowledge Transfer Network (KTN) and Stella Job, who is a Supply Chain and Environment Officer for the UK trade association Composites UK, outlining the process of pyrolysis and solvolysis, with the aid of informal industry interviews and a case study at a small British sports car manufacturer to consider the practical work required.